--- inventor-2.1.5-10.orig/apps/demos/noodle/noodle.c++
+++ inventor-2.1.5-10/apps/demos/noodle/noodle.c++
@@ -679,5 +679,6 @@
     SoXt::show(mainWindow);
 
     SoXt::mainLoop();
+    return 0;
 }